Wecannottrusthimanymorebecauseheoften________hisduty.
A、owesWhen traveling alone in the mountains, you ’d better take a _______ with you in case you get lost.
The engineers in this lab spent several weeks _______their plans for the new bicycle.
Whenaspacecrafttravels,oneofthemajorproblemsisreentryintotheEarth’s_______.
We do not have a _______ school in our institute. The highest degree we provide for the students is a B. A. and a B.S. .
Please be serious. I am not _______. You should consider it carefully
